i need more sleep:

common/models.py

-from utils import *
-
-
-class Model(object):
-
-    accessible_fields = ['id']
-    updatable_fields = ['id']
-    initializable_fields = ['id']
-    base_url = None
-    default_retrieve_params = {}
-
-    DEFAULT_ACTIONS_WITH_ID = ['get', 'put', 'delete']
-    DEFAULT_ACTIONS_WITHOUT_ID = ['get_all', 'post']
-    DEFAULT_ACTIONS = DEFAULT_ACTIONS_WITH_ID + DEFAULT_ACTIONS_WITHOUT_ID
-
-    def __init__(self, *args, **kwargs):
-        self.attributes = extract(kwargs, self.accessible_fields)
-        self.retrieved = False
-
-    def __getattr__(self, name):
-        if name == 'id':
-            return self.attributes.get('id', None)
-        try:
-            return self.attributes[name]
-        except KeyError:
-            if self.retrieved or self.id is None:
-                raise AttributeError("Field {0} does not exist".format(name))
-            self.retrieve()
-            return self.__getattr__(name)
-
-    def __setattr__(self, name, value):
-        if name == 'attributes' or name not in self.accessible_fields:
-            super(Model, self).__setattr__(name, value)
-        else:
-            self.attributes[name] = value
-
-    def __getitem__(self, key):
-        if key not in self.accessible_fields:
-            raise KeyError("Field {0} does not exist".format(key))
-        return self.attributes.get(key)
-
-    def __setitem__(self, key, value):
-        if key not in self.accessible_fields:
-            raise KeyError("Field {0} does not exist".format(key))
-        self.attributes.__setitem__(key, value)
-
-    def items(self, *args, **kwargs):
-        return self.attributes.items(*args, **kwargs)
-
-    def get(self, *args, **kwargs):
-        return self.attributes.get(*args, **kwargs)
-
-    def to_dict(self):
-        self.retrieve()
-        return self.attributes
-
-    def retrieve(self, *args, **kwargs):
-        if not self.retrieved:
-            self._retrieve(*args, **kwargs)
-            self.retrieved = True
-        return self
-
-    def _retrieve(self, *args, **kwargs):
-        url = self.url(action='get', params=self.attributes)
-        response = perform_request('get', url, self.default_retrieve_params)
-        self.update_attributes(**response)
-
-    @classmethod
-    def find(cls, id):
-        return cls(id=id)
-
-    def update_attributes(self, *args, **kwargs):
-        for k, v in kwargs.items():
-            if k in self.accessible_fields:
-                self.__setattr__(k, v)
-            else:
-                raise AttributeError("Field {0} does not exist".format(k))
-
-    def updatable_attributes(self):
-        return extract(self.attributes, self.updatable_fields)
-
-    def initializable_attributes(self):
-        return extract(self.attributes, self.initializable_fields)
-
-    @classmethod
-    def before_save(cls, instance):
-        pass
-
-    @classmethod
-    def after_save(cls, instance):
-        pass
-
-    def save(self):
-        self.__class__.before_save(self)
-        if self.id:   # if we have id already, treat this as an update
-            url = self.url(action='put', params=self.attributes)
-            response = perform_request('put', url, self.updatable_attributes())
-        else:   # otherwise, treat this as an insert
-            url = self.url(action='post', params=self.attributes)
-            response = perform_request('post', url, self.initializable_attributes())
-        self.retrieved = True
-        self.update_attributes(**response)
-        self.__class__.after_save(self)
-
-    def delete(self):
-        url = self.url(action='delete', params=self.attributes)
-        response = perform_request('delete', url)
-        self.retrieved = True
-        self.update_attributes(**response)
-
-    @classmethod
-    def url_with_id(cls, params={}):
-        return cls.base_url + '/' + str(params['id'])
-
-    @classmethod
-    def url_without_id(cls, params={}):
-        return cls.base_url
-
-    @classmethod
-    def url(cls, action, params={}):
-        if cls.base_url is None:
-            raise CommentClientError("Must provide base_url when using default url function")
-        if action not in cls.DEFAULT_ACTIONS:
-            raise ValueError("Invalid action {0}. The supported action must be in {1}".format(action, str(cls.DEFAULT_ACTIONS)))
-        elif action in cls.DEFAULT_ACTIONS_WITH_ID:
-            try:
-                return cls.url_with_id(params)
-            except KeyError:
-                raise CommentClientError("Cannot perform action {0} without id".format(action))
-        else:   # action must be in DEFAULT_ACTIONS_WITHOUT_ID now
-            return cls.url_without_id()